practises

Practises is the third-person singular present tense form of the verb to practise, used in British English and other varieties that follow British spelling conventions. The verb means to perform an activity repeatedly in order to improve a skill, or to rehearse for a performance or event. It can also refer to engaging in a professional activity. Examples include: She practises the piano daily. The team practises drills before the game. Doctors practis e medicine in that clinic. (Note: the standard spelling of the noun is practice, not practise, and some examples may vary in exact phrasing.)

In American English, the corresponding present-tense form is practices. The same meanings apply: She practices the piano daily; The team practices drills before the game; The doctor practices medicine at the clinic. The noun form in both varieties is practice, with a plural of practices. The term practice refers to an act of repeated exercise, a profession’s offices or clinics, or the general concept of habitual or customary action.

Common usage notes include the distinction between verb and noun spellings. Practises is a verb form and is not used as a noun in standard English; the noun is practice. The related plural noun is practices. Because practice also denotes a learned activity, careful spelling helps avoid confusion between practicing a skill and a professional practice, such as a medical practice.

Overall, practises is a regional spelling variant of a common verb form whose American equivalent is practices, while the related noun remains practice.